MMBT3904
Fairchild Semiconductor Corporation
33C5231
Currently the MMBT3904 is sourced by manufacturers such as DAICO Industries Inc., Diodes Incorporated, Fairchild Semiconductor, Infineon Technologies, MEI Technologies, Inc., Micro Commercial Components (MCC), NXP Semiconductors, ON Semiconductor, STMicroelectronics, and Vishay Semiconductors.
MMBT3904 Circuit Diagram
MMBT3904 Pinout Diagram